Dear All,
I am trying to integrate the simple_at example to my own application, in order to be able to configure the modem in the beginning and then run my code.
I can run the example on its own and run it without an issue. The same goes for my application. But when I try to combine the 2, then I get the following message:
Exception occurred in Secure State ***** HARD FAULT ***** Fault escalation (see below) ***** BUS FAULT ***** Precise data bus error BFAR Address: 0x50008120 ***** Hardware exception ***** Current thread ID = 0x200201b4 Faulting instruction address = 0x2fabc Fatal fault in ISR! Spinning...
I am using tag v 0.4.0 and the nRF9160 DK.
What I am actually doing is the following:
Use the void app_socket_start() from the example as is (adding a few more at commands that I need to add in the at_commands array).
void app_socket_start(void)
{
int at_socket_fd = socket(AF_LTE, 0, NPROTO_AT);
printk("Starting simple AT socket application\n\r");
if (at_socket_fd < 0) {
printk("Socket err: %d, errno: %d\r\n", at_socket_fd, errno);
}
for (int i = 0; i < ARRAY_SIZE(at_commands); i++) {
wdt_feed(wdt, wdt_channel_id);
int bytes_written = send(at_socket_fd, at_commands[i],
strlen(at_commands[i]), 0);
if (bytes_written > 0) {
int r_bytes =
blocking_recv(at_socket_fd, recv_buf,
sizeof(recv_buf), MSG_DONTWAIT);
if (r_bytes > 0) {
printk("%s\n", at_commands[i]);
printk("%s", recv_buf);
}
}
}
printk("Closing socket\n\r");
close(at_socket_fd);
// int err;
// int k = 0;
// while (k < 10){
// err = close(at_socket_fd);
// printk("Closing err: %d\n", err);
// wdt_feed(wdt, wdt_channel_id);
// k_sleep(1000);
// k++;
}
}
}
Then I am sending a UDP message like this:
void app_send_udp_message(u8_t *buffer, ssize_t size)
{
int err;
struct addrinfo *dest_addr;
err = getaddrinfo(HOST, NULL, NULL, &dest_addr);
if (err < 0) {
printk("getaddrinfo err: %d\n\r", err);
}
if (err != -1) {
((struct sockaddr_in *)dest_addr->ai_addr)->sin_port = htons(UDP_PORT);
((struct sockaddr_in *)dest_addr->ai_addr)->sin_family = AF_INET;
int socket_sender_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
printk("Success until here\n\n\n\n");
if (socket_sender_fd < 0) {
printk("socket_sender_fd: %d\n", socket_listener_fd);
}
printk("Sending UDP Message\n");
err = sendto(socket_sender_fd, buffer, size, MSG_DONTWAIT, (struct sockaddr *)dest_addr->ai_addr, sizeof((struct sockaddr *)dest_addr->ai_addr));
if (err < 0) {
printk("Sending response err: %d errno: %d\n", err, errno);
}
ssize_t count = blocking_recv(socket_sender_fd, recv_buf, sizeof(recv_buf) - 1, 0);
if (socket_sender_fd != -1) {
(void)close(socket_sender_fd);
}
freeaddrinfo(dest_addr);
}
}
What I noticed is that if I add a long delay after closing the socket that I open in the app_socket_start() (un-commenting the last lines in the app_socket start()), then the program doesn't crush. But I haven't found a way to make my code wait until that socket is properly closed in order to allow my code to continue.
Any ideas on how to best tackle this issue?
